Open to opportunities

OMAR INSURRIAGA

@omarinsurriaga

Staff-level full-stack engineer focused on scalable, event-driven web platforms and user-first, resilient frontend experiences.

United States

Message

What I'm looking for

I’m looking for a leadership-focused role building resilient, event-driven systems end-to-end—pairing React frontend excellence with Node/Python backend reliability, strong observability, and CI quality—so we can move fast without sacrificing uptime.

I’m a staff-level full-stack engineer with 12+ years of progressive experience architecting and scaling production systems across cloud environments. My core expertise spans JavaScript/TypeScript, Node.js, React, and Python, with a strong focus on building resilient, event-driven platforms that handle complex integrations and distributed workflows.

I bring technical leadership that drives architecture decisions, mentoring engineering teams, and establishing code quality standards. I balance hands-on delivery with strategic thinking—aligning technical solutions to business outcomes while keeping a user-first design philosophy—and I care deeply about cloud-native patterns and production observability.

At Allstacks, I built event-driven UI orchestration using Node.js and TypeScript, managing 50K+ daily workflow events with sub-100ms latency and 99.95% uptime. I delivered React and TypeScript UX improvements for an internal admin portal, simplifying configuration workflows and reducing support tickets by 35%. I also led a MongoDB-based configuration management system with Redis caching, reducing query latency by 65%, and strengthened webhook integration resilience and observability to improve deployment reliability by 40%.

Previously at Apple, I built React and Node.js services supporting millions of API requests daily and improved user engagement by 28% with interactive interfaces and responsive state management. At CitiusTech, I designed distributed pipelines in Node.js and Python with 99.9% data delivery reliability and helped achieve HIPAA-compliance certification ahead of schedule. Earlier roles at Sentry and Redfin strengthened my ability to optimize data and systems for performance, tracing, and real-world reliability.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Allstacks

Jun 2023 - Present (3 years 2 months)

Built event-driven UI orchestration with Node.js and TypeScript, managing 50K+ workflow events with sub-100ms latency and 99.95% uptime. Improved admin UX, reduced query latency with MongoDB and Redis caching, strengthened webhook integration reliability and observability, and automated third-party REST API data synchronization.

Node TypeScript React Event Driven Automation MongoDB Redis Webhooks REST APIs Observability

Full Stack Engineer

Apple

Oct 2021 - May 2023 (1 year 7 months)

Developed React and Node.js services supporting millions of API requests daily, improving performance through query optimization and caching. Delivered customer-facing UI improvements, implemented webhook/REST API integration workflows, and raised test coverage (45% to 92%) while reducing production defects by 60%, including MongoDB indexing optimizations for reporting features.

React Node REST APIs Webhooks Responsive Design State Management Jest Integration Testing MongoDB Query Optimization Indexing Strategies Testing

Senior Full Stack Developer

CitiusTech

Jul 2019 - Sep 2021 (2 years 2 months)

Designed distributed data pipelines in Node.js and Python for healthcare records with 99.9% delivery reliability, including robust error handling. Built a React clinical dashboard for 2,000+ concurrent users with sub-3-second load times, improved MongoDB performance with schema and indexing changes, and implemented security/compliance practices (encryption and audit logging) to achieve HIPAA certi

Node Python Data Pipelines React MongoDB Schema Design Indexing Strategies Real Time Analytics Encryption Audit Logging HIPAA compliance

Full Stack Developer

Sentry

Oct 2016 - Jul 2019 (2 years 9 months)

Built real-time error tracking pipelines with Node.js and Python, enabling distributed tracing and analytics over millions of application events. Developed React dashboard and alerting components, optimized MongoDB aggregation pipelines for performance, and improved mean time to detection for critical errors by 35%.

Node.Js Development Python Error Tracking React MongoDB Aggregation

Software Developer

Redfin

Oct 2012 - Sep 2016 (3 years 11 months)

Shipped backend services in Node.js for high-traffic real estate search, optimizing database queries and caching strategies for peak load. Built REST API/ETL data integration to automate property data synchronization, reducing listing update latency from 24 hours to 2 hours, and implemented monitoring/alerting using logging and metrics.

Node REST APIs ETL Query Optimization Caching Monitoring And Alerting Logging Metrics